Cómo fusionar capas para exportar por lotes y optimizar para web

Hice un script que hace casi exactamente eso (en términos de resultado final... Realmente no fusiona nada). La cuestión es que solo admite una carpeta de origen a la vez.

Exporte el documento para cada capa dentro del grupo seleccionado.jsx .

La forma en que funciona:

1. Primero oculta todas las capas en el primer nivel de la carpeta seleccionada
2. Luego recorre cada una de esas capas realizando estas acciones en cada capa:
   1. Muestra la capa actual (que también puede ser un grupo)
   2. Guarda el documento
   3. Oculta la capa actual

Entonces, cualquier cosa fuera del grupo seleccionado es visible en cada imagen de salida.

// Name: Export document for each layer inside selected group.jsx
// Formerly: Export Layers Inside Selected Group.jsx

// Description: Photoshop script that saves the whole document for each top level layer inside the selected group.
// Image example: https://user-images.githubusercontent.com/1164476/49152494-aef8af00-f31b-11e8-80ff-d774e3103eae.png

// https://gist.github.com/joonaspaakko/013a223e94ba0fb9a2a0

#target photoshop

try {
  var doc = app.activeDocument;
    var n = 0;
    var duplicates = {};
}
catch (e) {
  alert( 'Open a document first...' );
}

function processLayers( options) {
    
    var group       = doc.activeLayer;
    var groupLength = group.layers.length;
    
    var visibleArray = [];
    
    // HIDE ALL LAYERS
    for ( var i = 0; i < groupLength; i++ ) {
        visibleArray.push( group.layers[i].visible );
        group.layers[i].visible = false;
    }
    
    // START SAVING
    options.docName = doc.name.split('.')[0]; // Assumes filename contains only one period before the extion.
    for ( var i = 0; i < groupLength; i++ ) {
        
        var layer = group.layers[ i ];
        
        options.layerName = layer.name;
        options.layerIndex = i+1;
        
        layer.visible = true;
        save.file( options );
        layer.visible = false;
        
    }
    
    // RESTORE VISIBILITY
    for ( var i = 0; i < groupLength; i++ ) {
        group.layers[i].visible = visibleArray[i];
    }
    
    doc.activeLayer = group;

    alert('Done!'); // There's no error check so who am I to say if the files were saved, but at least the script is done...
    
}

var save = {
    file: function( options ) {
        
        var saveOptions = {};
        
        for ( var i=0; i < options.fileFormats.length; i++ ) {
            
            var fileformat = options.fileFormats[i];
            var destinationFolder = options.destination + "/" + fileformat.toUpperCase();
            
            makeFolder( destinationFolder ); // If it doesn't exist already...
            
            var filename = '';
            filename += options.prefix;
            filename += options.useLayerName ? options.layerName : options.custonName;
            filename += options.suffix;
            
            // IF FILENAME CONTAINS A DOLLAR SIGN
            if ( filename.match(/\$/) !== null ) {
                filename =  filename.replace('$',options.layerIndex);
            }
            // IF FILENAME DOESN'T HAVE THE DOLLAR SIGN AND A
            // DUPLICATE FILENAME IS FOUND, ADD A NUMBER ANYWAYS.
            else {
                
                if ( typeof duplicates[ fileformat ] == 'undefined' ) {
                    duplicates[ fileformat ] = {};
                }
                
                var duplicateNumber = '';
                if ( typeof duplicates[ fileformat ][ filename ] === 'object' ) {
                    duplicateNumber = ' ' + duplicates[ fileformat ][ filename ].length;
                    duplicates[ fileformat ][ filename ].push( filename );
                }
                else {
                    duplicates[ fileformat ][ filename ] = [ filename ];
                }
                
                filename += duplicateNumber;
            }
            
            doc.saveAs( File( destinationFolder + "/" + filename ), save[ fileformat ](), true );
            
        }
        
    },
    psd: function() {
        
        var psd_saveOpts = new PhotoshopSaveOptions();
        
        psd_saveOpts.layers            = true;
        psd_saveOpts.embedColorProfile = true;
        psd_saveOpts.annotations       = true;
        psd_saveOpts.alphaChannels     = true;
        
        return psd_saveOpts;
        
    },
    pdf: function() {
        
        var presetName = '[High Quality Print]';
        
        var pdf_SaveOpts = new PDFSaveOptions();
        
        pdf_SaveOpts.pDFPreset = presetName;
        
        return pdf_SaveOpts;
        
    },
    jpeg: function() {
        
        var jpg_SaveOpts = new JPEGSaveOptions();
        
        jpg_SaveOpts.matte   = MatteType.WHITE;
        jpg_SaveOpts.quality = 10;
        jpg_SaveOpts.formatOptions.STANDARDBASELINE;
        
        return jpg_SaveOpts;
        
    },
    png: function() {
        
        var png_SaveOpts = new PNGSaveOptions();
        
        png_SaveOpts.compression = 9;
        png_SaveOpts.interlaced = false;
        
        return png_SaveOpts;
        
    },
    tiff: function() {
        
        var tiff_SaveOpts = new TiffSaveOptions();
        
        tiff_SaveOpts.alphaChannels      = true;
        tiff_SaveOpts.annotations        = true;
        tiff_SaveOpts.imageCompression   = TIFFEncoding.JPEG;
        tiff_SaveOpts.interleaveChannels = true;
        tiff_SaveOpts.jpegQuality        = 10;
        tiff_SaveOpts.layers             = true;
        tiff_SaveOpts.layerCompression   = LayerCompression.ZIP;
        tiff_SaveOpts.transparency       = true;
        
        return tiff_SaveOpts;
        
    }
};

function makeFolder( path ) {
  var newFolder = Folder( path );
  if( !newFolder.exists ) newFolder.create();
}

if ( app.documents.length > 0 ) {
  if ( app.activeDocument.activeLayer.layers ) {
        init();
  }
  else {
    alert( "Error: \nSelect a parent group of the layers you want to export.")
  }
}

function init() {
    
    /*
    Code for Import https://scriptui.joonas.me — (Triple click to select):
    {"items":{"item-0":{"id":0,"type":"Dialog","parentId":false,"style":{"text":"Export document for each layer inside selected group.jsx","preferredSize":[0,0],"margins":16,"orientation":"column","spacing":10,"alignChildren":["center","top"]}},"item-1":{"id":1,"type":"Checkbox","parentId":6,"style":{"text":"PSD","preferredSize":[0,0],"alignment":null}},"item-2":{"id":2,"type":"Checkbox","parentId":6,"style":{"text":"TIFF","preferredSize":[0,0],"alignment":null}},"item-3":{"id":3,"type":"Checkbox","parentId":6,"style":{"text":"JPEG","preferredSize":[0,0],"alignment":null,"checked":true}},"item-4":{"id":4,"type":"Checkbox","parentId":6,"style":{"text":"PNG","preferredSize":[0,0],"alignment":null}},"item-5":{"id":5,"type":"Checkbox","parentId":6,"style":{"text":"PDF","preferredSize":[0,0],"alignment":null}},"item-6":{"id":6,"type":"Panel","parentId":9,"style":{"text":"","preferredSize":[0,0],"margins":10,"orientation":"row","spacing":10,"alignChildren":["center","top"],"alignment":null}},"item-7":{"id":7,"type":"Panel","parentId":9,"style":{"text":"","preferredSize":[0,0],"margins":10,"orientation":"column","spacing":10,"alignChildren":["left","top"],"alignment":null}},"item-8":{"id":8,"type":"EditText","parentId":14,"style":{"text":"","preferredSize":[90,0],"alignment":null}},"item-9":{"id":9,"type":"Group","parentId":0,"style":{"preferredSize":[0,0],"margins":0,"orientation":"column","spacing":10,"alignChildren":["fill","top"],"alignment":null}},"item-10":{"id":10,"type":"Group","parentId":0,"style":{"preferredSize":[0,0],"margins":[15,0,10,0],"orientation":"row","spacing":10,"alignChildren":["left","top"],"alignment":null}},"item-11":{"id":11,"type":"Button","parentId":10,"style":{"text":"Save","justify":"center","preferredSize":[0,0],"alignment":null}},"item-12":{"id":12,"type":"Button","parentId":10,"style":{"text":"Cancel","justify":"center","preferredSize":[0,0],"alignment":null}},"item-13":{"id":13,"type":"StaticText","parentId":14,"style":{"text":"Prefix:","justify":"left","preferredSize":[0,0],"alignment":null}},"item-14":{"id":14,"type":"Group","parentId":22,"style":{"preferredSize":[0,0],"margins":0,"orientation":"column","spacing":10,"alignChildren":["left","top"],"alignment":null}},"item-15":{"id":15,"type":"Checkbox","parentId":7,"style":{"text":"Use layer name","preferredSize":[0,0],"alignment":null,"checked":false}},"item-16":{"id":16,"type":"Group","parentId":22,"style":{"preferredSize":[0,0],"margins":0,"orientation":"column","spacing":10,"alignChildren":["left","top"],"alignment":null}},"item-17":{"id":17,"type":"StaticText","parentId":16,"style":{"text":"Custom name:","justify":"left","preferredSize":[0,0],"alignment":null}},"item-18":{"id":18,"type":"EditText","parentId":16,"style":{"text":"File Name ","preferredSize":[160,0],"alignment":null}},"item-19":{"id":19,"type":"Group","parentId":22,"style":{"preferredSize":[0,0],"margins":0,"orientation":"column","spacing":10,"alignChildren":["left","top"],"alignment":null}},"item-20":{"id":20,"type":"StaticText","parentId":19,"style":{"text":"Suffix:","justify":"left","preferredSize":[0,0],"alignment":null}},"item-21":{"id":21,"type":"EditText","parentId":19,"style":{"text":"","preferredSize":[90,0],"alignment":null}},"item-22":{"id":22,"type":"Group","parentId":7,"style":{"preferredSize":[0,0],"margins":0,"orientation":"row","spacing":10,"alignChildren":["left","center"],"alignment":null}},"item-23":{"id":23,"type":"Divider","parentId":7,"style":false},"item-24":{"id":24,"type":"StaticText","parentId":7,"style":{"text":"Dollar symbol ($) is replaced with incremental numbers","justify":"left","preferredSize":[0,0],"alignment":"center"}}},"order":[0,9,7,15,23,22,14,13,8,16,17,18,19,20,21,24,6,3,4,1,5,2,10,12,11],"activeId":10}
    */

    // DIALOG
    // ======
    var dialog = new Window("dialog");
        dialog.text = "Export document for each layer inside selected group.jsx";
        dialog.orientation = "column";
        dialog.alignChildren = ["center","top"];
        dialog.spacing = 10;
        dialog.margins = 16;

    // GROUP1
    // ======
    var group1 = dialog.add("group");
        group1.orientation = "column";
        group1.alignChildren = ["fill","top"];
        group1.spacing = 10;
        group1.margins = 0;

    // PANEL1
    // ======
    var panel1 = group1.add("panel");
        panel1.orientation = "column";
        panel1.alignChildren = ["left","top"];
        panel1.spacing = 10;
        panel1.margins = 10;

    var checkbox1 = panel1.add("checkbox");
        checkbox1.text = "Use layer name";

    var divider1 = panel1.add("panel");
        divider1.alignment = "fill";

    // GROUP2
    // ======
    var group2 = panel1.add("group");
        group2.orientation = "row";
        group2.alignChildren = ["left","center"];
        group2.spacing = 10;
        group2.margins = 0;

    // GROUP3
    // ======
    var group3 = group2.add("group");
        group3.orientation = "column";
        group3.alignChildren = ["left","top"];
        group3.spacing = 10;
        group3.margins = 0;

    var statictext1 = group3.add("statictext");
        statictext1.text = "Prefix:";

    var edittext1 = group3.add("edittext");
        edittext1.minimumSize.width = 90;

    // GROUP4
    // ======
    var group4 = group2.add("group");
        group4.orientation = "column";
        group4.alignChildren = ["left","top"];
        group4.spacing = 10;
        group4.margins = 0;

    var statictext2 = group4.add("statictext");
        statictext2.text = "Custom name:";

    var edittext2 = group4.add("edittext");
        edittext2.text = "File Name ";
        edittext2.minimumSize.width = 160;

    // GROUP5
    // ======
    var group5 = group2.add("group");
        group5.orientation = "column";
        group5.alignChildren = ["left","top"];
        group5.spacing = 10;
        group5.margins = 0;

    var statictext3 = group5.add("statictext");
        statictext3.text = "Suffix:";

    var edittext3 = group5.add("edittext");
        edittext3.minimumSize.width = 90;

    // PANEL1
    // ======
    var statictext4 = panel1.add("statictext");
        statictext4.text = "Dollar symbol ($) is replaced with incremental numbers";
        statictext4.alignment = ["center","top"];

    // PANEL2
    // ======
    var panel2 = group1.add("panel");
        panel2.orientation = "row";
        panel2.alignChildren = ["center","top"];
        panel2.spacing = 10;
        panel2.margins = 10;

    var checkbox2 = panel2.add("checkbox");
        checkbox2.text = "JPEG";
        checkbox2.value = true;

    var checkbox3 = panel2.add("checkbox");
        checkbox3.text = "PNG";

    var checkbox4 = panel2.add("checkbox");
        checkbox4.text = "PSD";

    var checkbox5 = panel2.add("checkbox");
        checkbox5.text = "PDF";

    var checkbox6 = panel2.add("checkbox");
        checkbox6.text = "TIFF";

    // GROUP6
    // ======
    var group6 = dialog.add("group");
        group6.orientation = "row";
        group6.alignChildren = ["left","top"];
        group6.spacing = 10;
        group6.margins = [0,15,0,10];

    var button1 = group6.add("button", undefined, undefined, {name:"cancel"});
        button1.text = "Cancel";
        button1.justify = "center";

    var button2 = group6.add("button", undefined, undefined, {name:"ok"});
        button2.text = "Save";
        button2.justify = "center";
  
    
    // DIALOG CUSTOMIZATION
    var filename = edittext2;
    filename.text = app.activeDocument.name.split()[0]; // Assumes filename contains only one period before the extion.
    filename.active = true;
    
  var useLayerName = checkbox1;
  useLayerName.onClick = function() {
    var check = this.value;
    var customName = edittext2;
    if ( check ) customName.enabled = !check;
    else customName.enabled = !check;
  };
  
  var cancelBtn = button1;
  cancelBtn.onClick = function() {
        dialog.close();
  };
  
  var saveBtn = button2;
  saveBtn.onClick = function() {
        n = ++n;
        if ( n === 1 ) {
            
        var formatsArray = [];
        var formats = panel2.children;
        for (var i = 0; i < formats.length; i++) {
                var format = formats[i];
                if ( format.value ) {
                    formatsArray.push( format.text.toLowerCase() );
                }
        }
            
            var path = '';
            try { path = doc.path; } catch(e) {}
            
        var options = {
          useLayerName: useLayerName.value,
          fileFormats: formatsArray,
          prefix: edittext1.text,
          custonName: edittext2.text,
          suffix: edittext3.text,
                destination: Folder.selectDialog( 'Select destination folder...', path )
        };
        
        dialog.close();
        
            if ( options.destination ) {
                processLayers( options );
            }
            
        }
  };
    
    dialog.show();
    
}